Electromagnetic induction If current in a conductor increases then according to Lenz's law self-induced voltage will Produce current opposite to the increasing current Tend to decrease the amount of current Aid the increasing current Aid the applied voltage Produce current opposite to the increasing current Tend to decrease the amount of current Aid the increasing current Aid the applied voltage ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the fpllowing inductor will have the least eddy current losses ? Iron core Air core Powdered iron core Laminated iron core Iron core Air core Powdered iron core Laminated iron core ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is 250 mH 350 mH None of the listed here 3500 mH 250 mH 350 mH None of the listed here 3500 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns. Yes No Yes No ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Reversing the field or the current will reverse the force on the conductor. Yes No Yes No ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction For a purely inductive circuit which of the following is true? Apparent power is zero Actual power of the circuit is zero Relative power is zero Any capacitance even if present in the circuit will not be charged Apparent power is zero Actual power of the circuit is zero Relative power is zero Any capacitance even if present in the circuit will not be charged ANSWER DOWNLOAD EXAMIANS APP